NationalStockNumber.INFO
Worldwide distributor of NSN parts and consumables located in the USA.
Worldwide distributor of NSN parts and consumables located in the USA.
Length: 11/16\", thread: 1/4-28, 12 point machine bolt, extended washer head, corrosion and heat resistant steel
| National Stock Number (NSN) | 5306-01-239-2403 |
| Alternate Part Number | N/A |
| Federal Supply Class (FSC) | 5306 |
| Unit of Measure (UOM) | 10 /Ea. |
| Thread Class | 3a |
| Thread Direction | Right-hand |
| Thread Length | Between 0.579 inches and 0.619 inches |
| Fastener Length | Between 0.678 inches and 0.698 inches |
| Head Style | Double hexagon w/hole |
| Head Height | Between 0.290 inches and 0.310 inches |
| Width Between Flats | 0.312 inches |
| Extended Washer Diameter | Between 0.428 inches and 0.448 inches |
| Extended Washer Thickness | 0.060 inches |
| Thread Diameter | 0.250 inches |
| Grip Length | Between 0.079 inches and 0.099 inches |
| Features Provided | Finished head |
| Thready Qty Per Inch (tpi) | 28 |
| Min. Tensile Strength (psi) | 130000 pounds per square inch |
| Hardness Rating | 24.0 rockwell c and 35.0 rockwell c |
| Minimum Yield Strength | 85000 pounds per square inch |
| Surface Finish | 32.0 microinches bearing surface of head |
| Surface Finish | 32.0 microinches grip |
| Surface Finish | 32.0 microinches threads |
| Material | Iron alloy 660 |
| Material Specification | Ams5731 assn standard single material response |
| Thread Series Designator | Unjf |
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